Whilst trawling through my spam filter's suspected spam files, I came across an interesting one.

-----------------------------------Dear Sir/Madam

Your Link will be added after your once reply.

Dear Webmaster,

As a part of ongoing campaign to increase the Link Popularity of My website I am looking for some good potential sites like yours.I review your site and find that, in SEO perspective your site is Perfect. Also, this would be a great resource for my visitors too.

Yeah I get these too. Like feedback on eBay, I link to sites that I think others might like. Not interested in mutual trades. But hey spammers have to do something to keep busy (I gather that 1 in 100 response rate is considered a success). If only there was someway to give these people back the grief they give us.